Direct argument is a dangerous strategy for developing eunoia, since "those who have many friends and treat everyone as close to them seem to be friends to no one, except in a fellow-citizens way. These people are regarded as ingratiating."

The author says if we translate this metopic or coronal curve into the language of psychology we have eunoia or prothymia.

1912, William Eastbrook Chancellor, "Temperment and the Education of Foreigners and of Their Children for American Citizenship", Educational Foundations39 (1)

We can usually tell which baby at three months old will never reach even imbecility, which child at three will never reach morinoia, habits of life, which boy or girl at six or seven will be arrested in morinoia and not proceed into eunoia.